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Method for preparing ethanol through acetate hydrogenation

A technology for hydrogenation of acetate and production of ethanol, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve problems such as unstable bed pressure, low copper utilization rate, irregular shape, etc., and achieve Improve the service life, more active sites, and reduce the effect of sintering

Active Publication Date: 2016-03-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bulk Raney copper catalysts can effectively solve the problem of recovery of powder alloy catalysts in the reaction, but most of the alloys are wrapped inside the alloy and cannot really play a catalytic role, resulting in low copper utilization and economical problems. Losses, in particular, the shape of the bulk Raney copper catalyst is irregular, and voids and bridging may appear in the filling, causing drift and channeling, so it is prone to unfavorable conditions such as unstable bed pressure

Method used

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  • Method for preparing ethanol through acetate hydrogenation
  • Method for preparing ethanol through acetate hydrogenation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) 100 mass parts of liquid epoxy resin (Baling Petrochemical, CYD-128), 85 mass parts of curing agent methyltetrahydrophthalic anhydride (MeTHPA) (Guangdong Shengshida Technology and Trade Co., Ltd.), curing accelerator triethanolamine (TEA) (Tianjin Chemical Reagent No. 1 Factory) 1.5 parts by mass and stirred evenly.

[0039] (2) Take by weighing 50g step (1) prepared epoxy system and 150g copper-aluminum alloy powder and fully stir and mix, Cu content is 50% (weight) in the copper-aluminum alloy, and aluminum content 50% (weight), take appropriate amount Put the mixture into a cylindrical mold, mold it with a flat vulcanizer at a temperature of 120°C and a pressure of 7MPa for 30mins, and use a flat vulcanizer at a temperature of 150°C and a pressure of 7MPa for 90mins, and take it out after cooling to obtain a 2.0mm× About 3.0mm cylindrical catalyst precursor;

[0040] (3) Measure 100ml of catalyst precursor, put it into a tube-type high-temperature electric furn...

Embodiment 2

[0043] (1) 100 mass parts of liquid epoxy resin (Baling Petrochemical, CYD-128), 85 mass parts of curing agent methyltetrahydrophthalic anhydride (MeTHPA) (Guangdong Shengshida Technology and Trade Co., Ltd.), curing accelerator triethanolamine (TEA) (Tianjin Chemical Reagent No. 1 Factory) 1.5 parts by mass and stirred evenly.

[0044] (2) Take by weighing 50g step (1) prepared epoxy system and 150g copper-aluminum alloy powder and fully stir and mix, Cu content is 50% (weight) in the copper-aluminum alloy, and aluminum content 50% (weight), take appropriate amount Put the mixture into a cylindrical mold, mold it with a flat vulcanizer at a temperature of 120°C and a pressure of 7MPa for 30mins, and use a flat vulcanizer at a temperature of 150°C and a pressure of 7MPa for 90mins, and take it out after cooling to obtain a 2.0mm× About 3.0mm cylindrical catalyst precursor;

[0045] (3) Measure 100ml of catalyst precursor, put it into a tube-type high-temperature electric furn...

Embodiment 3

[0048] (1) Fully mix powdered phenolic resin and curing agent hexamethylenetetramine with a high-speed mixer, the weight ratio of hexamethylenetetramine to phenolic resin is 12 / 100; mix 100 grams of mixture with 300 grams of copper aluminum alloy The powder is fully mixed with a high-speed mixer, and the Cu content is 50% (weight) in the copper-aluminum alloy, and the aluminum content is 50% (weight);

[0049] (2) Heat up the tablet press to 90°C, put the above materials into the mold and press on the tablet press to form a sheet with a thickness of 2mm; raise the temperature of the tablet press to 150°C, and mold the formed sheet Put it into the mold and solidify under the pressure of 5MPa on the tablet press for 10min; cut the cured 2mm thick sheet into small rectangular particles of 3-5mm;

[0050] (3) Take 100ml of small particles and carbonize them in a tube-type high-temperature electric furnace with a heating rate of 10°C / min and a furnace temperature of 650°C for 3 hou...

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Abstract

The present invention discloses a method for preparing ethanol through acetate hydrogenation. The method is characterized in that acetate contacts an activated composite catalyst in a fixed bed reactor at a reaction temperature of 100-300 DEG C under a reaction pressure of 1.0-5.0 MPa at an acetate liquid space velocity of 0.1-2 h<-1> according to a molar ratio of the hydrogen to the acetate of 15-50, wherein the composite catalyst comprises continuous phase carbon and dispersed phase Raney alloy particles, and the dispersed phase Raney alloy particles are uniformly or non-uniformly dispersed in the continuous phase carbon. According to the present invention, the activity of the composite catalyst is significantly improved, and high mechanical strength and wide temperature adaptability range are provided.

Description

technical field [0001] The invention relates to a method for preparing ethanol by hydrogenation of acetate, in particular, a composite catalyst is used to hydrogenate acetate to prepare ethanol. Background technique [0002] Ethanol, commonly known as alcohol, its structural formula is CH 3 CH 2 Oh. Ethanol has a wide range of uses and is widely used in food, chemical, pharmaceutical, dye, fuel, national defense and other industries. Ethanol is a good solvent, often used in the extraction of pigments in plants or medicinal ingredients in them. Ethanol with a volume fraction of 75% is commonly used as a medical disinfectant in medical treatment. As an important class of chemical raw materials, ethanol can be used to produce chemical raw materials such as acetaldehyde, ether, ethyl acetate, ethylamine, etc. It is also a raw material for the production of dyes, paints, detergents and other products. In addition, ethanol is also an important clean energy, which has the char...

Claims

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Application Information

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IPC IPC(8): C07C31/08C07C29/149B01J25/00
Inventor 张晓红田保亮蒋海斌吴佳佳黄龙鲁树亮王秀玲彭晖王国清唐国旗杨溢乔金樑戴伟
Owner CHINA PETROLEUM & CHEM CORP
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